Tavistock Square is a public space in the beautiful area of Bloomsbury in Central London. In the center of the square you can find a statue of Mahatma Gandhi, the peace campaigner and nonviolent resister to oppression in India and South Africa.
The square was developed in 1820s by the builder Thomas Cubbit and it is currently owned and administred by the London Borough of Camden.
You have to look for a nano magnetic cache which will be located in a place where you would normally place a "magnetic" container ;-).
Lbh pna svaq vg rira vs gur fdhner vf pybfrq gb gur choyvp, vg vf nobir - ohg pybfr gb - gur tebhaq naq pybfre gb Tnaquv'f evtug unaq.